J's bloodwork came back normal this time. Whew.
And, I'm hesitant to say it, but for the moment, her diaper rash is looking a little better.
So we're skipping the diabetes test for now, but I have the option of testing her next week if the rash doesn't resolve. It should resolve within a week, otherwise it's back to the dermatologist again.
Keeping those fingers crossed and counting my blessings that she is otherwise healthy!